Pausing Movie Clips

It there a way i can pause the animation in one movie cilp until another movie cilp has loaded

this is what it want to do:
the firts movie clip is loaded into the main stage the you hit a button, the animation starts… half way through it pauses, then loads another movie into a diffrent container, it waits for the second movie to be full load the finishes the animation…

i can do everything above execpt get it to pause utill the second clip is loaded